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0 item @ $0.00  

Pellyite with Muirite

#42231

Pellyite with Muirite

#42231
Availability
Sold
Size
4 x 3 x 1.5 cm - Miniature 
Formula
Ba2CaFe2+2Si6O17 (RRUFF)
Locality
Esquire #8 claim, Big Creek, Fresno Co., California, United States

A 15x14cm area of crystalline, glassy brown Pellyite in Sanbornite rich matrix. Pellyite is an extremely rare mineral according to Robert Walstrom. There are several grains of less than 1mm Muirite scattered within the matrix. Both minerals are rich in barium as is Sanbornite. Pellyite is not fluorescent and resembles smoky quartz. It rarely forms crystals at Big Creek - Rush Creek deposits. It forms in contact metamorphic deposits.

Pellyite

Formula
Ba2CaFe2+2Si6O17 
Crystal System
Orthorhombic 
Crystal Habit
Massive 
Cleavage
Indistinct, Indistinct, None 
Luster
Vitreous (Glassy) 
Color
colorless, light yellow 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Conchoidal 
Hardness

Data courtesy of Webmineral.

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